The present study was aimed to evaluate the growth performance and subsequent survival rate of the rohu (Labeo rohita) and tilapia (Oreochromis niloticus).The experiment was conducted in th th six concrete tanks under an outdoor laboratory shed from 10 May to 29 July, 2019.There were three replications for each treatment and feed was supplied at the rate of 12%, 8%, and 4% of the st nd rd body weight of rohu and 20%, 15%, and 10% of the body weight of tilapia in 1 , 2 and 3 month for rohu (T ) and tilapia (T ) respectively to assess the comparative growth performance.The initial 1 2 weight of individual tilapia was 7.52±1.81g and 14.75±0.19g for T and T respectively.The final 1 2, mean weight of each fish was 44.01±5.65gfor T and 139.94±1.29 g for T The weight gains of fish 1 2.were 36.49±4.09g and 125.19±1.29 g for T and T respectively.The mean percent weight gain of 1 2, tilapia was higher in T (1715.05±0.00)than T (485.23±0.00).Feed conversion ratio (FCR) in T and 2 1 1 T were 2.86±0.14 and 2.23±0.18,respectively.Higher total production was obtained in T (1119.52 2 2 g) than T (278.19 g) with 100% survival in both the treatments.The water quality parameters for 1 both of the species were within the suitable range.The study reveals that growth performance was higher in T than T having 100% survival rate in the concrete tanks.
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Rahman et al. (2021) studied this question.
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